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Effect of Nitrogen Application Methods on Yield and Grain Quality of an Extremely Early Maturing Rice Variety

Author

Listed:
  • Yeotae Yun

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

  • Gyucheol Kim

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

  • Giwon Cho

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

  • Youngju Lee

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

  • Tugsang Yun

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

  • Hakhun Kim

    (Crop Research Department, Chungcheongnamdo Agricultural Research and Extension Services, Yesan 340861, Chungcheongnamdo, Republic of Korea)

Abstract

This study aimed to investigate the effect of nitrogen application methods on the yield and grain quality of an extremely early maturing rice variety. The experiment was conducted in the rice research field of Chungnam Agricultural Research and Extension Services, South Korea, in 2019 and 2020. Two nitrogen application methods, BD (100% as a basal dressing) and BTD (70% as a basal dressing + 30% as a top dressing), with three different nitrogen levels (70 kg/ha, 90 kg/ha, and 110 kg/ha), were employed. The results showed that BD treatment had comparable or higher head rice yields and improved grain quality compared to BTD treatment at all nitrogen levels. Additionally, the SPAD value at heading date was highly correlated with both the protein content (r 2 = 0.838**) and glossiness of cooked rice (r 2 = 0.630**). Therefore, this study suggests that BD treatment could be an effective approach to improve the productivity and quality of extremely early maturing rice varieties while saving on labor costs, and the SPAD value can be used as an index to infer the taste of rice. In conclusion, this study provides useful insights into nitrogen application methods that can be used to enhance the yield and quality of extremely early maturing rice varieties.

Suggested Citation

  • Yeotae Yun & Gyucheol Kim & Giwon Cho & Youngju Lee & Tugsang Yun & Hakhun Kim, 2023. "Effect of Nitrogen Application Methods on Yield and Grain Quality of an Extremely Early Maturing Rice Variety," Agriculture, MDPI, vol. 13(4), pages 1-14, April.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:4:p:832-:d:1116698
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    References listed on IDEAS

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    1. Yihao Yang & Min Guo & Shengyuan Sun & Yelu Zou & Shuangyi Yin & Yannan Liu & Shuzhu Tang & Minghong Gu & Zefeng Yang & Changjie Yan, 2019. "Natural variation of OsGluA2 is involved in grain protein content regulation in rice," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
    2. Yajie Hu & Shumin Cong & Hongcheng Zhang, 2021. "Comparison of the Grain Quality and Starch Physicochemical Properties between Japonica Rice Cultivars with Different Contents of Amylose, as Affected by Nitrogen Fertilization," Agriculture, MDPI, vol. 11(7), pages 1-15, June.
    3. Min Jiang & Xiubin Li & Liangjie Xin & Minghong Tan & Wen Zhang, 2023. "Impacts of Rice Cropping System Changes on Paddy Methane Emissions in Southern China," Land, MDPI, vol. 12(2), pages 1-13, January.
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